Product Overview
Reliable custom rubber parts for industrial applications
Quick Answer
This throttle body flange seal is a molded elastomer gasket for automotive and industrial air-intake systems. Available profiles include D-rings, square-cut seals, multi-lip gaskets and ribbed O-ring-style seals. Standard inner diameters range from 40 to 120 mm. FKM, HNBR, VMQ, FVMQ, NBR and EPDM compounds are available according to the operating conditions.
This throttle body flange seal is a molded elastomer gasket installed between the throttle body and the intake manifold or related air-intake housing. It helps reduce unmetered air leakage while maintaining stable flange compression. Available profiles include D-rings, square-cut seals, multi-lip gaskets and ribbed O-ring-style seals. Standard inner diameters range from 40 to 120 mm.
Product Overview
The throttle body flange seal is designed for automotive and industrial engine air-intake assemblies. It creates a controlled sealing interface around the throttle-body air passage and helps reduce unintended air bypass at the flange connection. Depending on the manifold design, the gasket can be manufactured as a D-ring, square-cut seal, multi-lip profile, ribbed O-ring-style gasket or application-specific molded shape. Integrated locating tabs or retention pegs can help keep the gasket seated during assembly. Material selection depends on engine-compartment temperature, oil mist, blow-by condensate, fuel-vapor exposure and compression-set requirements. Critical dimensions should be confirmed from the throttle-body drawing, manifold-groove drawing or physical sample.
Key Features
- Designed for sealing between throttle-body housings and intake manifolds or related air-control components.
- Helps reduce unmetered air leakage at the primary intake-flange interface.
- Available as D-ring, square-cut, multi-lip, ribbed O-ring-style and custom molded profiles.
- Optional locating tabs and retention pegs help position the gasket during assembly.
- Profile geometry can be matched to face-seal grooves, dovetail grooves and symmetrical retaining channels.
- Critical sealing surfaces can be manufactured with controlled flash requirements according to the drawing.
- High compression-set resistance can be specified for long-term flange clamping and thermal cycling.
- Custom material, Shore A hardness, dimensions, tolerances and packaging are available upon request.
Product Specifications
| Specification | Details |
|---|---|
| Product Name | Throttle Body Flange Seal |
| Material | FKM, HNBR, VMQ, FVMQ, NBR or EPDM. Material selection depends on the application conditions. |
| Hardness | Available according to material and application requirements |
| Color | Black, green or custom colors according to the selected compound |
| Manufacturing Process | Compression molding or injection molding, depending on the gasket structure |
| Profile Options | D-ring, square-cut seal, multi-lip profile, ribbed O-ring-style seal or custom molded gasket |
| Groove Interface Options | Face-seal groove, dovetail groove or symmetrical retaining channel |
| Assembly Features | Optional locating tabs, retention pegs and alignment features |
| Application | Throttle-body sealing in automotive and industrial engine air-intake systems |
| Customization | Inner diameter, outer diameter, thickness, cross-section, lip geometry, locating tabs, retention pegs, groove interface, bolt-hole pattern, material, Shore A hardness, dimensional tolerance, flash requirements, packaging and inspection requirements can be reviewed according to the drawing. |
| MOQ | Contact us for details |
| Tooling | Tooling cost depends on the drawing and product structure |
| Sample Availability | Available upon request |
| Lead Time | Available upon request |
| Compliance Options | ASTM D2000, SAE J200, RoHS and REACH requirements can be reviewed according to the selected compound. Documentation is available upon request. |
Profile and Groove Selection Guide
| Profile Type | Typical Characteristics | Recommended Use |
|---|---|---|
| D-Ring Profile | Flat contact face with controlled compression behavior | Throttle-body interfaces requiring stable face sealing and defined installation orientation |
| Square-Cut Profile | Broad sealing contact area and simple cross-section | Flat flange interfaces and application-specific retaining grooves |
| Multi-Lip Profile | Multiple local sealing lines across the contact interface | Applications requiring controlled sealing contact under limited flange compression |
| Ribbed O-Ring-Style Profile | Raised ribs increase localized sealing contact | Grooved housings and applications requiring retention during assembly |
| Custom Profile with Locating Tabs | Integrated alignment features support gasket positioning | High-volume assembly lines and complex plastic or metal manifold grooves |
Material Selection Guide
| Rubber Material | Typical Shore A Hardness | Temperature Range | Key Characteristics | Recommended Applications |
|---|---|---|---|---|
| FKM | 60–70 Shore A | -20°C to +200°C | Heat resistance and compatibility with fuel vapors, oil mist and blow-by condensates | Turbocharged engines, supercharged systems and demanding engine-compartment applications |
| HNBR | 65–75 Shore A | -40°C to +150°C | Tear strength, wear resistance and compatibility with synthetic motor oils | Passenger vehicles, direct-injection engines and variable-valve-timing platforms |
| VMQ / FVMQ | 55–65 Shore A | -50°C to +175°C | Low-temperature flexibility and ozone resistance; fuel-vapor compatibility depends on the selected grade | Cold-climate applications and lightweight intake-system designs |
| NBR | Available upon request | Available according to compound | Oil resistance and practical cost-to-performance balance | Standard intake applications involving oil-mist exposure |
| EPDM | Available upon request | Available according to compound | Weather, ozone, water and coolant resistance | Applications without hydrocarbon-oil or fuel-vapor contact |
Applications
Throttle body flange seals are used in automotive and industrial powertrain air-intake assemblies where the throttle-body housing connects to the intake manifold, intake plenum, adapter plate or related air-control component. The seal surrounds the intake passage and helps reduce unintended air bypass around the flange interface. In turbocharged or supercharged systems, the profile should also be reviewed against the expected pressure conditions. Locating tabs and retention pegs can help maintain gasket positioning during manual or automated assembly. The final profile should match the mating surfaces, groove geometry, bolt pattern, compression target, engine temperature and exposure to oil mist, fuel vapor and blow-by condensates.
Customization Options
Custom throttle body flange seals can be developed according to 2D drawings, 3D STEP models, OEM part numbers or physical samples. Buyers can specify the inner diameter, outer diameter, cross-section, sealing-lip geometry, groove interface, locating tabs, retention pegs, bolt-hole pattern, material, Shore A hardness and dimensional tolerance. Flash-control requirements should be identified for critical sealing surfaces. Material selection depends on operating temperature, pressure conditions, oil mist, blow-by gases, fuel-vapor exposure and compression-set requirements. Please provide the throttle-body model, manifold drawing, prototype quantity, required annual volume and packaging requirements. Tooling cost depends on the drawing and product structure.
What Information Should Buyers Provide for a Quote?
- 2D drawing, 3D model, OEM part number or physical sample
- Throttle-body model and installation position
- Inner diameter and outer diameter
- Air-passage dimensions
- Cross-section profile
- Groove width and groove depth
- Face-seal, dovetail or retaining-channel interface
- Locating-tab or retention-peg requirements
- Bolt-hole pattern, if applicable
- Rubber material
- Shore A hardness
- Operating temperature
- Pressure or vacuum conditions
- Oil-mist, blow-by or fuel-vapor exposure
- Compression requirements
- Required quantity
- Estimated annual volume
- Compliance requirements
- Packaging requirements
FAQ
What is a throttle body flange seal used for?
A throttle body flange seal is installed between the throttle-body housing and the intake manifold or related air-intake component. It helps maintain a controlled air passage and reduce unintended external air leakage around the flange connection.
What can happen if a throttle body flange seal fails?
A degraded or incorrectly installed seal may allow unintended air bypass at the intake junction. Depending on the engine-management system and leak severity, possible symptoms can include unstable idle, engine surging, reduced fuel efficiency, lean-condition fault codes or a check-engine warning. The complete intake system should be inspected to confirm the cause.
Why are locating tabs and retention pegs useful?
Locating tabs and retention pegs can help keep the gasket seated inside the groove during handling and assembly. This reduces the risk of gasket displacement, pinching or incorrect orientation when the throttle body is positioned and the flange bolts are tightened.
Why should buyers consider a multi-lip profile instead of a standard O-ring?
A multi-lip profile can create several local sealing lines across the flange interface. This can support controlled sealing contact under the specified compression level. The correct choice depends on the groove geometry, mating surfaces, bolt torque and intake-system operating conditions.
How should buyers select FKM, HNBR or VMQ / FVMQ?
FKM can be reviewed for higher temperatures and demanding exposure to fuel vapor, oil mist and blow-by condensates. HNBR provides tear strength, wear resistance and compatibility with synthetic oils. VMQ or FVMQ can be considered where low-temperature flexibility is important. Final selection depends on the application conditions.
Are prototype samples available?
Prototype samples are available upon request. Sample planning depends on the gasket profile, dimensions, material, Shore A hardness, tooling requirements, inspection criteria and quantity. Please submit your drawing, 3D model, OEM part number or physical sample for technical review.
Request a Custom Quote
Send your throttle-body drawing, manifold-groove drawing, 3D STEP model, OEM part number or physical sample for technical review. Please include the cross-section, groove geometry, locating features, compound requirements, temperature range, pressure conditions, estimated annual volume and packaging expectations so we can prepare a practical quotation.
